Paper VT-TuP11
Extreme 2 Million Liter/sec Hydrogen Pump Speed Measurements of C-2W Divertors

Tuesday, October 23, 2018, 6:30 pm, Room Hall B

TAE Technologies (TAE) has completed building and commissioning its latest machine, C-2W. C-2W has four 15m3 divertors which require the capability to pump out H2 neutral particles at a rate of 2,000 m3 /s and D2 neutral particles at 1,500 m3 /s. To achieve this, TAE has developed LN2 cooled titanium getter cryobox pumps each with a pump speed of approximately 110 m3 /s and 85 m3 /s for hydrogen and deuterium respectively. These cryoboxes are arrayed in the divertors to achieve the high pump speeds required to keep the plasma conditions optimal during C-2W operations. Experimental pump speed and density measurements using fast ion gauges and residual gas analysis of C2W’s four divertors will be presented.